Revise smart, understand Better

0.000 s

When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion?

Its acceleration is constant.

Its velocity is constant.

Both its acceleration and its velocity are constant.

Neither its acceleration nor its velocity is constant.

Suppose that an object is moving with constant acceleration. Make a statement concerning its motion with respect to time.

In equal times its speed increases by equal amounts.

In equal times its velocity changes by equal amounts.

In equal times it moves equal distances.

A statement cannot be made using the information given.

Suppose a ball is thrown downward in the absence of air resistance. Make a statement concerning its acceleration.

Its acceleration is constant.

Its acceleration is zero.

Its acceleration is constantly increasing.

Its acceleration is constantly decreasing.

Suppose that an object is moving with a constant velocity. Make a statement concerning its acceleration.

The acceleration must be constantly decreasing.

The acceleration must be equal to zero.

The acceleration must be a constant non-zero value.

The acceleration must be constantly increasing.

Under what condition is average velocity equal to the average of the object's initial and final velocity?

The acceleration must be constantly changing.

The acceleration must be constant.

This can only occur if there is no acceleration.

This is impossible.